<%@ tag body-content="empty" 
%><%@ attribute name="container"  required="true" type="com.db4o.ext.ExtObjectContainer" 
%><%@ attribute name="object"  required="true" type="java.lang.Object" 
%><%@ attribute name="var" required="true" rtexprvalue="false" 
%><%@ variable name-from-attribute="var" variable-class="java.lang.Long" alias="objectId" scope="AT_END" 
%><%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"  
%><c:set var="objectId" value="<%=container.getID(object)%>" />